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StatsToDo : Factor Analysis (Exploratory) Program

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Related link :
Factor Analysis Explanation Page

Number of Factors to Extract :

Factor Analysis Using Raw Data

Factor Analysis Using Matrix

Number of factors to extract
    - Use default 0 to trigger the K1 rule

Data Entry for using Raw Data
The data is a matrix of numbers with multiple columns
    - Each row a subject
    - Each column a variable
    - Each cell the value of that variable (col) for that subject(row)

Data Entry for using Matrix
The data is a symmetrical matrix (rows=columns)
    - The matrix can be a covariance or a correlation matrix